<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.8/dist/vue.js" type="text/javascript"></script>
</head>
<body>
    <!-- 
        v-for指令
            1.用于展示列表数据
            2.语法:v-for="(item,index) in xxx" : key="yyy"
            3.可遍历:数组、对象、字符串（用的很少)、指定次数（用的很少)

     -->
    <div id="box">  
        <!-- 遍历数组 -->
        <h2>人员信息</h2>
        <ul>
            <li v-for="(p,index) in persons" :key="index">
                {{p.name}}-{{p.age}}
            </li>
        </ul>

        <!-- 遍历对象 -->
        <h2>汽车信息</h2>
        <ul>
            <li v-for="(value,key,index) in car" :key="index">
                {{index}}-{{key}}-{{value}}
            </li>
        </ul>

        <!-- 遍历字符串 -->
        <h2>test</h2>
        <ul>
            <li v-for="(value,index) in str" :key="index">
                {{index}}-{{value}}
            </li>
        </ul>

        <!-- 遍历指定数字 -->
        <h2>test1</h2>
        <ul>
            <li v-for="(value,index) in 5" :key="index">
                {{index}}-{{value}}
            </li>
        </ul>

    </div>

    <script>
        Vue.config.productionTip = false;  //阻止vue在启动时生成生产提示
        //创建实例
        let vm = new Vue({
            el:"#box",
            data:{
                persons:[
                    {id:01,name:"su",age:21},
                    {id:01,name:'ming',age:22},
                    {id:03,name:'xiaohu',age:25}
                ],
                car:{
                    name:"奥迪",
                    color:"black",
                    producted:"2021"
                },
                str:"beijing"
            }
        })
       
    </script>
</body>
</html>